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CN1531272A - Method for dynamically lossless regulating bandwidth of inner embedded elastic package circular network - Google Patents

Method for dynamically lossless regulating bandwidth of inner embedded elastic package circular network Download PDF

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Publication number
CN1531272A
CN1531272A CNA03119558XA CN03119558A CN1531272A CN 1531272 A CN1531272 A CN 1531272A CN A03119558X A CNA03119558X A CN A03119558XA CN 03119558 A CN03119558 A CN 03119558A CN 1531272 A CN1531272 A CN 1531272A
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China
Prior art keywords
bandwidth
processing layer
network
synchronous digital
digital network
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Granted
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CNA03119558XA
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Chinese (zh)
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CN1266895C (en
Inventor
唐勇
权星月
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CNB03119558XA priority Critical patent/CN1266895C/en
Priority to EP04717013A priority patent/EP1613000B1/en
Priority to DE602004014481T priority patent/DE602004014481D1/en
Priority to AT04717013T priority patent/ATE398872T1/en
Priority to PCT/CN2004/000170 priority patent/WO2004082220A1/en
Publication of CN1531272A publication Critical patent/CN1531272A/en
Priority to US11/224,631 priority patent/US7764631B2/en
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Publication of CN1266895C publication Critical patent/CN1266895C/en
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Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S370/00—Multiplex communications
    • Y10S370/901—Wide area network
    • Y10S370/902—Packet switching
    • Y10S370/903—Osi compliant network
    • Y10S370/907—Synchronous optical network, SONET

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)

Abstract

A method relates to adjusting the ring net bandwidth of embed resilient packet ring dynamically and nondestructively, through adding link volume control system into processing layer of synchronous digital network implements the dynamical and nondestructive adjustment of ring net bandwidth of RPR resilient packet ring embedded in SDH/ SONET. When increasing ring net bandwidth, it firstly increases the bandwidth among the processing layer nodes of SDH/SONET, then starts the link volume control system in the SDH/SONET processing layer. The link volume control system nondestructively increases the actual bandwidth of processing layer ring net, finally increases the bandwidth of RPR processing layer ring net: When reducing the bandwidth of ring net, it firstly reduces the bandwidth of RPR processing ring net, then starts the ling volume control system in the SDH/SONET processing net. The link volume control system nondestructively reduces the actual bandwidth in SDH/SONET processing layer link, finally reduces the bandwidth among the processing layer nodes of SDH/SONET.

Description

The dynamically harmless method of adjusting embedded elastic package circular network bandwidth
Technical field
The present invention relates to the optical network band width adjustment technology, be meant especially a kind of to being embedded in synchronous digital network, as synchronous digital transmission system (SDH), the harmless method of adjusting of Resilient Packet Ring (RPR) the looped network Bandwidth Dynamic of Synchronous Optical Network (SONET).
Background technology
Synchronous digital network (the SDH)/embedded Resilient Packet Ring (RPR) of Synchronous Optical Network (SONET) can strengthen the data transmission capabilities of optical transmission device, and benefit discovery automatically, fair algorithm etc. are reused, opened up to the bandwidth space that can be implemented on the SDH/SONET optical transmission device.
The embedded RPR of SDH/SONET increases the RPR processing layer on the SDH/SONET transport layer, Fig. 1 is the embedded RPR looped network logical construction schematic diagram of SDH/SONET, as shown in Figure 1, the embedded RPR looped network of SDH/SONET logically is divided into SDH processing layer 102 and RPR processing layer 101, and the embedded RPR of this SDH/SONET comprises four nodes (site) 103.
Because be the embedded RPR of SDH/SONET, so need to be the pre-configured bandwidth of RPR processing layer on the SDH/SONET processing layer, for example, the SDH processing layer is by the bandwidth of Virtual Concatenation technology for 2 virtual container VC4 of RPR processing layer configuration, for its use.When needs increase the optical transmission device bandwidth, when perhaps needing for some reason to reduce the optical transmission device bandwidth,, at first need to interrupt the operation of optical transmission device owing in whole looped network, there is not the support of the harmless adjustment technology of Bandwidth Dynamic, change its band width configuration, and then start optical transmission device.Will inevitably cause the business datum of optical transmission device transmission to be interrupted like this, make SDH processing layer and the RPR processing layer can't operate as normal.
In addition; for bandwidth is the RPR looped network of N virtual container; when certain virtual container of a certain section of RPR looped network breaks down; because bandwidth must be consistent on the looped network; therefore other intact virtual containers that are in this section even whole looped network all can't use, and at this moment, protection takes place whole RPR looped network switches; bandwidth reduces by half, and causes utilance to reduce greatly.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of dynamically harmless method of adjusting embedded elastic package circular network bandwidth, realize the dynamically harmless of embedded elastic package circular network bandwidth of synchronous digital transmission system/Synchronous Optical Network adjusted.
In order to achieve the above object, the invention provides a kind of dynamically harmless method of adjusting embedded elastic package circular network bandwidth, be applicable to the embedded elastic package circular network of the synchronous digital network that comprises synchronous digital network processing layer, Resilient Packet Ring processing layer, it is characterized in that: increase is provided with the link capacity Adjustment System in the synchronous digital network processing layer, and the method includes the steps of:
Need to increase that internodal bandwidth is required purpose bandwidth on the bandwidth link in A1, the configuration synchronization digital network processing layer looped network;
Link capacity Adjustment System in B1, the startup synchronous digital network processing layer is the purpose bandwidth with harmless increase of actual bandwidth that needs in the synchronous digital network processing layer looped network to increase bandwidth link;
The bandwidth of C1, configuration Resilient Packet Ring processing layer looped network is required purpose bandwidth.
Described steps A 1 is required purpose bandwidth for all internodal bandwidth on the configuration synchronization digital network processing layer looped network; Then described step B1 is for starting the link capacity Adjustment System in the synchronous digital network processing layer, and harmless increase of actual bandwidth of the whole looped network of synchronous digital network processing layer is the purpose bandwidth.
The bandwidth of the Resilient Packet Ring of configuration described in step C1 processing layer looped network is: by adjusting the band width configuration parameter of Resilient Packet Ring processing layer looped network, the bandwidth that disposes whole Resilient Packet Ring processing layer looped network is required purpose bandwidth.
Link capacity Adjustment System in the described startup synchronous digital network of the step B1 processing layer is: by the link capacity Adjustment System in configuration order mode or the automated manner startup synchronous digital network processing layer.
A kind of dynamically harmless method of adjusting embedded elastic package circular network bandwidth, be applicable to the embedded elastic package circular network of the synchronous digital network that comprises synchronous digital network processing layer, Resilient Packet Ring processing layer, it is characterized in that: increase is provided with the link capacity Adjustment System in the synchronous digital network processing layer, and the method includes the steps of:
The bandwidth of A2, configuration Resilient Packet Ring processing layer looped network is required purpose bandwidth;
B2, start the link capacity Adjustment System in the synchronous digital network processing layer, will need to reduce the harmless purpose bandwidth that is reduced to of actual bandwidth of bandwidth link in the synchronous digital network processing layer looped network;
Need to reduce that internodal bandwidth is required purpose bandwidth on the bandwidth link in C2, the synchronous digital network processing layer configuration looped network.
Described step B2 is for starting the link capacity Adjustment System in the synchronous digital network processing layer, with the harmless purpose bandwidth that is reduced to of actual bandwidth of the whole looped network of synchronous digital network processing layer; Then described step C2 is that all internodal bandwidth are required purpose bandwidth on the configuration synchronization digital network processing layer looped network.
The bandwidth of the Resilient Packet Ring of configuration described in the steps A 2 processing layer looped network is: by adjusting the band width configuration parameter of Resilient Packet Ring processing layer looped network, the bandwidth that disposes whole Resilient Packet Ring processing layer looped network is required purpose bandwidth.
Described step C2 further comprises: unnecessary virtual container between node on the removal synchronous digital network processing layer looped network.
Link capacity Adjustment System in the described startup synchronous digital network of the step B2 processing layer is: start link capacity by configuration order mode or automated manner and adjust processing layer.
By in the synchronous digital network processing layer of the embedded elastic package circular network of synchronous digital network, increasing the link capacity Adjustment System, utilize the harmless characteristic that changes the network bandwidth of link capacity adjustment technology, thereby realize the whole looped network of embedded Resilient Packet Ring or the dynamically harmless of certain section looped network bandwidth of synchronous digital network are adjusted.Like this; when bandwidth change takes place owing to fault or fault recovery in certain section link on the whole looped network; can change the bandwidth of other non-faulty link by the link capacity adjustment technology; so that keep the consistency of whole looped network bandwidth at any time; make the whole looped network still can operate as normal; switch and protection needn't take place, cause the waste of resource.
Description of drawings
Fig. 1 is the embedded RPR looped network of a SDH/SONET logical construction schematic diagram;
Fig. 2 is according to the embedded RPR looped network of SDH/SONET of the present invention logical construction schematic diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is by increasing Link Capacity Adjustment Scheme (LCAS in the Virtual Concatenation technology; LinkCapacity Adjustment Scheme); promptly in the SDH/SONET processing layer, increase the LCAS system; utilize the self-characteristic of LCAS technology to realize that the dynamically harmless of the embedded RPR looped network of whole SDH/SONET bandwidth adjust; certain virtual container VCx that can satisfy simultaneously in the embedded RPR looped network of SDH/SONET a certain section breaks down; or need increase or reduce this section bandwidth the time for local certain section at the embedded RPR looped network of SDH/SONET; the embedded RPR looped network of whole SDH/SONET still can operate as normal, switches and protection needn't take place.
In the prior art, the SDH/SONET processing layer is encapsulated into the RPR Frame in the payload of N virtual container by the Virtual Concatenation technology, can realize can joining continuously of whole looped network bandwidth by the Virtual Concatenation technology, promptly supports the configuration to whole looped network bandwidth.And the LCAS technology can dynamically nondestructively increase or reduce the quantity of virtual container, thereby increases or reduce total network mapping capacity, realizes the harmless transmission of data in the adjustment process of network capacity.Simultaneously, when certain virtual container lost efficacy to network by the LCAS technology for detection, can reduce network capacity automatically, and remove the virtual container that lost efficacy; After repairing to the virtual container that lost efficacy, can add the virtual container after the reparation, and network capacity that will this moment returns to the network capacity before this virtual container breaks down automatically by the LCAS technology for detection.So, the present invention just can combine the band width configuration and the bandwidth adjustment of the embedded RPR looped network of SDH/SONET by increase the LCAS protocol processes on the basis of Virtual Concatenation technology, realizes the dynamically harmless of looped network bandwidth adjusted.
Fig. 2 is according to the embedded RPR looped network of SDH/SONET of the present invention logical construction schematic diagram, as shown in Figure 2, increases LCAS system 201 in the SDH/SONET processing layer 102 of the embedded RPR looped network of SDH/SONET.
The collaborative work of SDH/SONET processing layer, RPR processing layer and LCAS system by the embedded RPR looped network of SDH/SONET realizes that the dynamically harmless of the embedded RPR looped network of SDH/SONET bandwidth adjust, simultaneously, certain section link generation bandwidth increases or when reducing on the embedded RPR looped network of whole SDH/SONET, still can guarantee the operate as normal of the embedded RPR looped network of whole SDH/SONET, describe in detail below.
When needs increase the embedded RPR looped network of whole SDH/SONET bandwidth, for example: the former bandwidth of the embedded RPR looped network of SDH/SONET is 3 virtual container VC3/STS-1, because the demand of capacity extensions, the looped network bandwidth need be increased to 4 virtual container VC3/STS-1, realize that then the dynamically harmless concrete steps of adjusting of the network bandwidth are:
At first, increase each internodal bandwidth in the SDH/SONET processing layer looped network, soon bandwidth is adjusted into 4 virtual container VC3/STS-1 by 3 virtual container VC3 between each node, and the adjustment mode can be manual operation or configuration automatically; Then, start the LCAS system in the SDH/SONET processing layer, the looped network bandwidth of whole SDH/SONET processing layer is increased to 4 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1 are harmless; At last, adjust the band width configuration parameter of RPR processing layer looped network, the looped network bandwidth of whole RPR processing layer is increased to 4 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1 are harmless, finish the harmless increase of the embedded RPR looped network of whole SDH/SONET bandwidth.
Equally, when needs reduce the embedded RPR looped network bandwidth of whole SDH/SONET, for example: the former bandwidth of the embedded RPR looped network of SDH/SONET is 3 virtual container VC3/STS-1, because client's needs, the embedded RPR looped network of SDH/SONET bandwidth need be decreased to 2 virtual container VC3/STS-1, realize that then the dynamically harmless concrete steps of adjusting of the network bandwidth are:
At first, adjust the band width configuration parameter of RPR processing layer looped network, the looped network bandwidth of whole RPR processing layer is decreased to 2 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1; Then, start the LCAS system in the SDH processing layer, the looped network bandwidth of whole SDH processing layer is decreased to 2 virtual container VC3/STS-1 by 3 virtual container VC3 are harmless; At last, reduce each internodal bandwidth in the SDH/SONET processing layer, soon bandwidth is decreased to 2 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1 between each node, 1 unnecessary virtual container VC3/STS-1 between each node in the removal SDH/SONET processing layer, the adjustment mode can be manual operation or configuration automatically, finishes harmless the reducing of the embedded RPR looped network of whole SDH/SONET bandwidth.
In addition; when certain section link on the embedded RPR looped network of SDH/SONET occurs that bandwidth increases or when reducing; be that internodal bandwidth increases or reduces, still can guarantee the operate as normal of the embedded RPR looped network of whole SDH/SONET, switch and protection needn't take place according to method provided by the invention.
With certain section link occurs fault is example, the bandwidth of supposing the embedded RPR looped network of current whole SDH/SONET is 4 virtual container VC3/STS-1, when certain two internodal 1 virtual container VC3/STS-1 break down, can reduce the bandwidth of all the other non-faulty links by the processing of LCAS system, to guarantee the bandwidth unanimity of whole looped network, specific practice is: at first, adjust the band width configuration parameter of RPR processing layer looped network, the looped network bandwidth of whole RPR processing layer is decreased to 3 virtual container VC3/STS-1 by 4 virtual container VC3/STS-1; Then, start the LCAS system in the SDH processing layer, the looped network bandwidth of whole SDH processing layer is decreased to 3 virtual container VC3/STS-1 by 4 virtual container VC3/STS-1 are harmless; At last; reduce each internodal bandwidth in the SDH/SONET processing layer; soon bandwidth is decreased to 3 virtual container VC3/STS-1 by 4 virtual container VC3/STS-1 between each node, thereby finishes the unanimity adjustment of the embedded RPR looped network of whole SDH/SONET bandwidth, switches and protection needn't take place.
When the virtual container VC/STS-13 that breaks down between above-mentioned two nodes recovers, for guaranteeing the bandwidth unanimity of whole looped network, still increase the bandwidth of all the other non-faulty links by the processing of LCAS system, specific practice is: at first, increase each internodal bandwidth in the SDH/SONET processing layer looped network, soon bandwidth increases to 4 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1 between each node; Then, start the LCAS system in the SDH/SONET processing layer, the looped network bandwidth of whole SDH/SONET processing layer is increased to 4 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1 are harmless; At last, adjust the band width configuration parameter of RPR processing layer looped network, the looped network bandwidth of whole RPR processing layer is increased to 4 virtual container VC3/STS-1 by 3 virtual container VC3/STS-1 are harmless, thereby finish the unanimity adjustment of the embedded RPR looped network of whole SDH/SONET bandwidth.
In the implementation procedure of such scheme, can be manually or automated manner start LCAS system in the SDH/SONET processing layer, that is to say, can import configuration order in real time and start the LCAS system works, or set in advance the condition that starts the LCAS system.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (9)

1, a kind of dynamically harmless method of adjusting embedded elastic package circular network bandwidth, be applicable to the embedded elastic package circular network of the synchronous digital network that comprises synchronous digital network processing layer, Resilient Packet Ring processing layer, it is characterized in that: increase is provided with the link capacity Adjustment System in the synchronous digital network processing layer, and the method includes the steps of:
Need to increase that internodal bandwidth is required purpose bandwidth on the bandwidth link in A1, the configuration synchronization digital network processing layer looped network;
Link capacity Adjustment System in B1, the startup synchronous digital network processing layer is the purpose bandwidth with harmless increase of actual bandwidth that needs in the synchronous digital network processing layer looped network to increase bandwidth link;
The bandwidth of C1, configuration Resilient Packet Ring processing layer looped network is required purpose bandwidth.
2, method according to claim 1 is characterized in that:
Described steps A 1 is required purpose bandwidth for all internodal bandwidth on the configuration synchronization digital network processing layer looped network;
Then described step B1 is for starting the link capacity Adjustment System in the synchronous digital network processing layer, and harmless increase of actual bandwidth of the whole looped network of synchronous digital network processing layer is the purpose bandwidth.
3, method according to claim 1 and 2, the bandwidth that it is characterized in that the Resilient Packet Ring of configuration described in step C1 processing layer looped network is: by adjusting the band width configuration parameter of Resilient Packet Ring processing layer looped network, the bandwidth that disposes whole Resilient Packet Ring processing layer looped network is required purpose bandwidth.
4, method according to claim 1 is characterized in that the link capacity Adjustment System in the described startup synchronous digital network of the step B1 processing layer is: by the link capacity Adjustment System in configuration order mode or the automated manner startup synchronous digital network processing layer.
5, a kind of dynamically harmless method of adjusting embedded elastic package circular network bandwidth, be applicable to the embedded elastic package circular network of the synchronous digital network that comprises synchronous digital network processing layer, Resilient Packet Ring processing layer, it is characterized in that: increase is provided with the link capacity Adjustment System in the synchronous digital network processing layer, and the method includes the steps of:
The bandwidth of A2, configuration Resilient Packet Ring processing layer looped network is required purpose bandwidth;
B2, start the link capacity Adjustment System in the synchronous digital network processing layer, will need to reduce the harmless purpose bandwidth that is reduced to of actual bandwidth of bandwidth link in the synchronous digital network processing layer looped network;
Need to reduce that internodal bandwidth is required purpose bandwidth on the bandwidth link in C2, the synchronous digital network processing layer configuration looped network.
6, method according to claim 5 is characterized in that:
Described step B2 is for starting the link capacity Adjustment System in the synchronous digital network processing layer, with the harmless purpose bandwidth that is reduced to of actual bandwidth of the whole looped network of synchronous digital network processing layer;
Then described step C2 is that all internodal bandwidth are required purpose bandwidth on the configuration synchronization digital network processing layer looped network.
7, according to claim 5 or 6 described methods, it is characterized in that described in the steps A 2 that the bandwidth of configuration Resilient Packet Ring processing layer looped network is: the bandwidth of the whole Resilient Packet Ring processing layer of the band width configuration parameter configuration looped network by adjusting Resilient Packet Ring processing layer looped network is required purpose bandwidth.
8, method according to claim 5 is characterized in that described step C2 further comprises: unnecessary virtual container between node on the removal synchronous digital network processing layer looped network.
9, method according to claim 5 is characterized in that the link capacity Adjustment System in the described startup synchronous digital network of the step B2 processing layer is: start link capacity by configuration order mode or automated manner and adjust processing layer.
CNB03119558XA 2003-03-11 2003-03-11 Method for dynamically lossless regulating bandwidth of inner embedded elastic package circular network Expired - Fee Related CN1266895C (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CNB03119558XA CN1266895C (en) 2003-03-11 2003-03-11 Method for dynamically lossless regulating bandwidth of inner embedded elastic package circular network
EP04717013A EP1613000B1 (en) 2003-03-11 2004-03-04 Method of dynamic lossless adjusting the bandwidth of the in-line resilient packet ring network
DE602004014481T DE602004014481D1 (en) 2003-03-11 2004-03-04 METHOD FOR THE DYNAMIC LOSS-FREE ADJUSTMENT OF THE BANDWIDTH OF AN INLINE RESILIENT PACKET RING NETWORK
AT04717013T ATE398872T1 (en) 2003-03-11 2004-03-04 METHOD FOR DYNAMIC LOSS-FREE ADJUSTMENT OF THE BANDWIDTH OF AN INLINE RESILIENT PACKET RING NETWORK
PCT/CN2004/000170 WO2004082220A1 (en) 2003-03-11 2004-03-04 Method of dynamic lossless adjusting the bandwidth of the in-line resilient packet ring network
US11/224,631 US7764631B2 (en) 2003-03-11 2005-09-12 Method for dynamic lossless adjustment of bandwidth of an embedded resilient packet ring network

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CNB03119558XA CN1266895C (en) 2003-03-11 2003-03-11 Method for dynamically lossless regulating bandwidth of inner embedded elastic package circular network

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CN1531272A true CN1531272A (en) 2004-09-22
CN1266895C CN1266895C (en) 2006-07-26

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EP (1) EP1613000B1 (en)
CN (1) CN1266895C (en)
AT (1) ATE398872T1 (en)
DE (1) DE602004014481D1 (en)
WO (1) WO2004082220A1 (en)

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